21.52 Here's Jose! "No no, I didn't run down the touchline to celebrate. I ran to tell Fernando and Demba the changes we had to make for the last three minutes plus injury time. I think we did enough in the beginning of the second half to score before, but we couldn't. They played pure counter-attack, no ball possession, and it was difficult for us to penetrate in that second part of the second half. So I played Demba and Fernando.

"We trained yesterday with three different systems. Demba made a crucial finish for us and I think it was very much deserved. The team that decided to defend was punished, and the team that gave everything - sometimes with the heart - deserved to through to the semis."

21.50 Jose did get one thing wrong: it wasn't pure mathematics after all. It ended 3-3, but Chelsea won thanks to Eden Hazard's penalty last week. But yes, that was about all he got wrong. His post-match interview should be interesting. We'll have it any second now.

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21.45 Demba Ba and John Terry are being interviewed on ITV. "At 1-0 we always give ourself a chance by not conceding," says Terry. "We worked a lot on various scenarios - 1-0, 2-1 - all week, hit the big man. We've had criticism of the strikers but tonight they got it right. It means a lot. The competition means a lot to us. Winning it is the best feelling ever. Nights like tonight: big players, big performances that's what we live for."

FULL TIME: Chelsea 2-0 PSG (Chelsea win on away goals) Chelsea are into the semi-finals! It's a famous night at Stamford Bridge, and all the players are dancing around the pitch to Madness's One Step Beyond. Whether it's a triumph of the human spirit or just one of those things that sometimes happens in football is open to debate.

Chelsea did not play particularly well; against that, they hit the bar twice and found one last push when they really needed it, with four or five minutes of concerted pressure culminating in Demba Ba's decisive goal. Some of their players were excellent, particularly Schurrle, Terry and Azpilicueta, and their wonderful run at Stamford Bridge goes on. PSG will have considerable regrets from this game. They were weak and wishy-washy going forward.

They will probably be outsiders in the semi-finals, though they won't mind that - not after 2012, and not after this, the kind of victory that gives a team a sense of destiny.

90+4 min A corner to PSG, won by their new centre-forward Alex. The keeper Sirigu is forward - and his opposite number Cech punches clear. And now he has made a crucial save! PSG attacked again, with Maxwell playing it back to Marquinhos 12 yards out. He placed a deliberate shot towards the near post, a really clever effort, and Cech reacted smartly to beat it wide. If he'd been done at the near post again...

90+3 min PSG only have themselves to blame really. Their attacking was negligent for most of the match, and only now are they really trying to score a goal. They had 87 minutes before Ba's goal in which they could have done that.

90+2 min Alex is playing centre-forward for PSG. The game is ragged, like a playground match, with PSG pressing desperately.

90 min There will be four minutes of additional nail-eating for Chelsea fans. After what happened with Andres Iniesta in 2009, they will not be counting a single chicken.

88 min That Cavani miss looks even more important now. Mourinho is waving furiously on the touchline, trying to get Ba and Torres to play as second full-backs in front of Azpilicueta and Ivanovic.

GOAL! Chelsea 2-0 PSG (Ba 87) Demba Ba has surely put Chelsea into the semi-final! Mourinho is straight down the touchline, celebrating with his team and giving tactical instructions. Yet another long ball was lumped into the box. It was half cleared to Azpilicueta, whose 20-yard shot from the left deflected across the box. Ba, lurking at the far post, reacted quicker than Maxwell and dragged the ball over the sprawling Sirigu from six yards. Amazing. Two goals, both from substitutes. Mourinho, who started the game with a rare old puss on him, is going to have the last laugh.

85 min A long throw from the left causes havoc in the PSG box. Eto'o had a goalbound volley blocked by a defender, although by then the referee had blown for a PSG free-kick, probably for a push by Ba on Jallet.

84 min Lucas, the wide forward, is replaced by the central defender Marquinhos.

83 min Torres tries to run through everyone in the box. He gets past a couple before Alex lumps the ball out for a throw-in. This is the spell of pressure that Chelsea have waned for the last 20 minutes. But they still look a bit ragged.

82 min Chelsea are struggling to put PSG under any pressure, and David Luiz is booked for an impatient wrestling manoeuvre on Matuidi. That allows PSG to waste another 30 seconds.

81 min Another Chelsea substitution: Oscar off, Torres on. Clive Tyldesley on ITV tells us that Torres has scored twice in 51 substitute appearances for Chelsea, although one of those was at the Nou Camp.

80 min An excellent short-passing move from PSG ends with a fierce 25-yard strike from Lucas that is straight at Cech and well held.

79 min Maxwell is booked for a foul on Schurle.

77 min: Cavani has missed a sitter! Cabaye, on the halfway line to the right, drilled a wonderful angled pass over the defence. Cavani's first touch was immaculate, daintily cushioning it into his stride so that he could hit it on the run from 10 yards. He sidefooted it over the bar with his left foot.

76 min Pastore floats a dangerous ball towards Cavani, who is cocked for a left-foot volley just inside the area when Ivanovic gets a vital headed touch. it comes to Maxwell, who drives it all the way across the box and wide of the far post. This has been a poor game, riddled with nerves. Ba runs into Thiago Silva in the box and falls over. There's a half shout for a penalty, nothing more. And now

75 min A dangerous cross from Oscar, in a deep, narrow position on the right, just evades Ba on the six-yard line.

74 min Chelsea have started hitting a few long balls towards the head of Ba, who is winning enough of them for it to be a concern to PSG. It wouldn't be a surprise if a winning goal came that way.

73 min Another PSG substitution: Lavezzi off, Javier Pastore on.

72 min Matuidi plays a fine long pass down the inside-left channel, who runs behind Ivanovic and then, from the left of the box, smashes the bouncing ball a few yards over the bar.

71 min Lavezzi, the liveliest of the PSG attackers, tries to play a through pass for himself. Cech gets there first.

70 min Chelsea are understandably getting more desperate and leaving a few gaps. If PSG concentrate properly on the counter-attack they should be able to create some chances, though their attackers have been lazy all night, particularly the overrated Cavani.

68 min A long ball is headed on by Ba to Schurrle, who makes a superb run infield from the right to receive the ball before hitting a shot from the edge of the area that hits Maxwell and is comfortably saved by Sirigu.

67 min An outswinging free-kick from deep on the right is headed high over the bar by Lucas, under considerable pressure 12 yards from goal.

65 min A Chelsea substitution: Demba Ba replaces Frank Lampard, so presumably Oscar will drop into midfield in a 4-4-2. Fernando Torres's face is probably a picture right now.

63 min A corner on the left for Chelsea, which will be swung in by Lampard. Before it's taken Maxwell has to leave the field with a cut on his face. As it was cut given him by the arm of a Chelsea player, PSG will be aggrieved should Chelsea score from the corner. They don't; Sirigu punches clear.

62 min Cahill tries to impress Laurent Blanc with a Blanc-style run from defence. You don't need me to tell you that his enterprise ends with PSG in possession.

61 min John Terry is limping heavily, although it'll take more than searing, shooting pain to get him off the field.

58 min This game is suddenly extremely open. Matuidi's left-wing cross deflects off David Luiz and onto the roof of the net. Lavezzi's corner is headed wide by Cavani, ahead of the near post.

57 min Lavezzi whips the free-kick into a dangerous area, a cross-shot towards the far post, and Cech dives to his left to punch it away for a throw-in.

55 min A rattled PSG make their first substitution, with Yohan Cabaye replacing Marco Verratti. Now PSG have a chance, with Ivanovic booked for fouling Matuidi this far outside the box on the left. He will miss the first leg of the semis if Chelsea get there.

54 min: Oscar hits the bar from the free-kick! Dumb luck for Chelsea. It was a fine effort from Oscar, bent towards the far corner and flush onto the crossbar as Sirigu leapt to his left.

52 min: Schurrle hits the bar! It was a fine move from Chelsea. Lampard robbed Verratti and found Eto'o with a crisp pass down the left. He fed it infield to Oscar, who slid it wide to Willian on the other side of the area. He cut it back to Schurrle, who stormed onto the ball and slammed a fierce first-time shot off the bar from 15 yards. In the ensuing melee, Lucas barged Eto'o over just outside the area to the left of centre. He is booked and Chelsea have a free-kick in a very dangerous position.

50 min Lucas goes flying just outside the penalty area after a challenge from Terry. The referee waves play on and Terry stomps righteously back to his station. There was no contact.

49 min A slow start to the half. The keeper Sirigu is whistled while taking an age over a free-kick.

46 min PSG begin the second half, kicking from right to left. Their attacking was a bit lazy in the first half, as is often the case with sides who have a biggish first-leg lead.

Half-time: Chelsea 1-0 PSG Chelsea will be happy with the scoreline, if not necessarily the performance. PSG will be happy with the performance, if not necessarily the scoreline. See you in 10 minutes for the second half.

44 min PSG have applied a little balm, keeping the ball for a minute or so to move then closer to half-time. Thiago Motta's deep, inswinging free-kick from the right is punched away well under pressure by Cech.

42 min Thiago Silva is back on and seems to be okay. The game, as Clive Tyldesley says on ITV, has become a bit feverish. That probably suits Chelsea more than PSG, who could with half-time and some nice soothing words frm Laurent Blanc.

41 min Now Lampard is booked for a sliding foul on Lavezzi, who was breaking dangerously into the Chelsea half. That was cynical and deliberate from Lampard, because Napoli were in a really good counter-attacking position.

40 min Chelsea get a free-kick just inside their own half. Cavani stands in front of the ball, so David Luiz charges up and boots it off Cavani, who is booked. That means Cavani will miss the first leg of the semi-final should PSG get there.

39 min Thiago is off the field, limping along the touchline at the moment. It's hard to know quite how bad a tackle it was from Eto'o until we see a few replays.

37 min Thiago Silva, the last man on the edge of the area, makes a brilliant sliding tackle on Eto'o, who goes over the top of the ball and puts his studs on Thiago's shin. "That's a bit naughty," says Andy Townsend. It was worse than that. Eto'o is all apologies but, well, you slammed your studs into his shin, Samuel.

36 min Oscar is causing problems every time he pulls to the left, and Jallet brings him down with a stupid tackle. It'll be another inswinger from Lampard. It's a brilliant ball in, which hits the back of Cavani at the near post and breaks straight to Cahill. He's eight yards out, right in front of goal, but attacks the ball with all the composure of a teenage boy wrestling with his first bra strap and shanks it high and wide. What a chance!

33 min Schurrle goes down in the box after a challenge from Verratti, prompting a big appeal for a penalty. The referee says no, and replays show that was the right decision. Schurrle was looking for it.

GOAL! Chelsea 1-0 PSG (Schurrle 32) How's this for a plot twist? Hazard goes off injured and his replacement Schurrle scores. it was an almost offensively straightforward goal. A long throw from Ivanovic on the right, a flick on by the head of David Luiz, and a calm first-time finish from 12 yards by Schurrle as the ball dropped onto his right foot. He took that really nicely. As things stand Chelsea, who have been hopeless thus far, are one goal from the semi-final.

29 min A beautifully struck long-range shot from David Luiz kicks up off the pitch and is well held by Sirigu, plunging to his right. The save itself was routine but he did well to hold out.

28 min Lampard's inswinging free-kick takes a big deflection off the wall and flies towards the near post, where Sirigu changes direction and plunges to his right to tip the ball round the post. That's an extremely good save. He was expecting a ball into the six-yard box, which is what Lampard went for, before the ball changed direction dramatically off the noggin of someone in the wall.

26 min With Hazard off the field, the need to get Oscar on the ball is even more pressing. He moves smoothly infield from the left wing, past Verratti, who fouls him and is booked.

25 min Cavani curls the free-kick straight into the wall.

24 min Chelsea are a rabble at the moment. Lucas goes on a long run all the way across the field before he is fouled by Willian, 25 yards from goal. Willian is booked. The free-kick is fractionally to the left of centre, and Alex might fancy this against his old club.

22 min PSG keep the ball without trouble for a minute or two, with their fans cheering every pass. Chelsea's performance becomes more unfathomable by the minute.

19 min When PSG get the ball they are able to potter around with it at leisure. Chelsea are only pressing the ball when they enter the final third. PSG, meanwhile, aren't really trying to score a goal. It's all strangely subdued.

18 min It gets worse for Chelsea: Eden Hazard, their one world-class player, is struggling with an injury of some description and has been replaced by Andre Schurrle.

16 min A goal - or even a chance - can change everything but Chelsea, you have to say, don't look especially inspired or up for it.. It's like they were given their pre-match teamtalk by a grouchy teenager or something.

15 min A nice run from Lavezzi, who slips the ball wide to the overlapping left-back Maxwell. He passes a fine first-time cross, all along the floor into the area between defender and keeper, and Terry does very well to clear under pressure from Cavani.

Shane O'Leary: "I am with you because my wife is watching Eastenders and we are a one-telly house, but I have learned to love and would like you to alert your readers to the joys of following you and yours while listening to the radio commentary in the headphones, sometimes it's like you're all watching the same match."

13 min Sirigu, the keeper, receives a backpass and decides to take Eto'o on. Eto'o fouls him and that's the end of that, although it was an unnecessary risk from Sirigu.

11 min Chelsea are starting to wake up after that somnolent start and Lampard's long-range shot is blocked by Verratti.

10 min Lavezzi, rightly given offside, puts the ball in the net anyway. He isn't booked despite a bit of outrage from the crowd. Nor is he one of the four PSG players on a yellow card; they are Thiago Motta, Alex, Matuidi and Cavani.

9 min Lovely play from Oscar, who dupes Jallet on the left side of the box and toebungs a cross towards Eto'o on the left edge of the six-yard box. His snapshot is deflected over the bar, and the resulting corner skims off Ivanovic's head before drifting well wide of the far post.

7 min Chelsea haven't started well at all. A dismal pass from Lampard, followed by a sliding foul on Lucas, is a reflection of the game thus far. The crowd have already gone quiet as well.

6 min Alex is penalised for excessive masculinity in the vicinty of Hazard, down the Chelsea left. Lampard will curl it into the area between goalkeeper and defenders. Actually it's a poor free-kick, with no elevation, and PSG clear comfortably.

3 min There's a fine atmosphere down the Lane, as you'd hope in such circumstances. I expected a fast start from Chelsea but it's been quite the opposite, with PSG looking the more urgent with and without the ball. No incidents of note thus far.

Tushar Shanker: "Oh look. Chelsea are starting with a single striker. Highly attacking by their standards. 2-1 to PSG."

1 min Peep peep! Peep! Chelsea kick off from right to left. They are in blue; PSG are in white with a fat blue and red stripe down the middle.

19.40 Mourinho has just given a comically grumpy pre-match interview to ITV's Gabriel Clarke. He's in a special place right now.

"Do you think you can replicate the performance against Napoli two years ago?"

"Dunno, I wasn't here."

Prediction on which you are strongly advised not to stake your last Rolo: Chelsea 2-1 PSG

Herrick: "If Chelsea go all-out-attack then they are out! PSG are a very disciplined and technical team..."

Gbadebo Olalekan: "You need not to rule Chesea out of the competition yet. Tonight will be tough for PSG, because Chelsea will take full control of the game. The likes of Willian, Oscar, Lampard and Hazard will really torment the defence of PSG knowing fully well that some of them have been booked. I predict 3-0 Chelsea."

Benn Gillmore: "It is hard to question a coach who has led two sides, Porto and Inter Milan, to glory in the Champions League but Mourinho still has a point to prove with Chelsea in Europe. He will organise, coax and inspire his players to give their all."

18.35 The Sky Sports News folk are wearing their Grave Face while reading soberly from a freshly printed sheet of paper, and that can only mean one thing: JFK has been shot the team news is in.Samuel Eto'o returns to the Chelsea starting line-up after injury, while Zlatan Ibrahimovic is out for PSG.

18.30 Here's a slightly strange statgasm. French clubs teams have only ever won two European competitions, Marseille in 1992-93 and PSG in 1995-96. That's fewer than, among others, Belgium, Portugal, Scotland and the Soviet Union, and the same as Sweden.

Mind you, France lead the list of Intertoto Cup winners with a walloping 12. Any readers who can name all 12, and the seasons in which they won the competition, will win my deepest sympathy at what has become of their life.

&lt;noframe&gt;Twitter: Henry Winter - Mourinho in &lt;a href="https://twitter.com/search?src=hash&amp;q=%23cfc" target="_blank"&gt;#cfc&lt;/a&gt; prog "We have to approach game with no fear &amp;amp; the belief that with the perfect performance we can achieve something special&lt;/noframe&gt;

18.00 Hello. Jose Mourinho doesn’t do failure. Or rather, he didn’t do failure. Between 2002 and 2012 Mourinho won at least one trophy in every season except 2007-08, which doesn’t count because he was down the dole office from September. Last season he won the square root of nowt with Real Madrid and now he is facing a second consecutive season without a trophy. For a serial winner like Mourinho, that is unthinkable.

With Liverpool securing the Premier League title at Upton Park last Sunday, the Champions League is Mourinho and Chelsea’s last chance of silverware. They’re in quite the predicament, 3-1 down to an excellent PSG side, although there is no lawful impediment to them overturning that.

It’s been a weird season for Mourinho. Up to Christmas he seemed to be sulking after being rejected by Manchester United. Then he came to life majestically in the New Year, masterminding victory at Manchester City and ensuring every press conference was must-see TV. Now he doesn't quite have the same twinkle in his eye, and at times in the last few weks has seemed like a Jose Mourinho tribute act. But life moves pretty fast, particularly in the jerky-kneed world of 21st-century football discourse, and if Mourinho pulls it off tonight he will be three games away from becoming the first man to win the European Cup with three different clubs.

A 3-1 deficit is not the worst for Chelsea. Obviously; infinity-0 is the worst deficit. But the point is that it’s so much better than 2-0, because Chelsea need not drive themselves round the bend worrying about the concession of an away goal: if PSG score tonight, their first goal will be worth one, not two. And it is far from beyond the realms that Chelsea might score three in 90 minutes at home. They managed three in the first 17 minutes against Arsenal.

They may only need two, especially as they haven't conceded a goal at Stamford Bridge since mid-January. Nobody needs reminding how powerful Chelsea are at home under Mourinho. This season their record in all competitions at home is: P22 W19 D2 L1 F50 A10.

That should give them sufficient confidence to stay calm if their likely fast start doesn't produce a goal. They should also remember how much pressure PSG are under. Whether it’s on a first date, in a European second leg or in a particularly fraught game of Connect 4, it’s easy to forget that the other party is likely to be equally as nervous as you, maybe more so.

Also, and I don’t think anyone has mentioned this, but Chelsea OVERCAME A 3-1 FIRST-LEG DEFICIT AGAINST A TEAM CONTAINING LAVEZZI AND CAVANI IN 2012. AND THAT WAS ON A TUESDAY TOO. AND IT INVOLVED 22 MEN AND A FOOTBALL.

So: it's possible Chelsea will go through, and possible that PSG will. We'll leave you to consider that searing insight for a few minutes.

Kick off is at 19.45.

16.00 Jose Mourinho says Chelsea were "dangerous" to themselves in Paris as they let slip a late goal to lose the first leg 3-1 against PSG and give themselves a bigger moutain to climb at Stamford Bridge tonight.

But you can never say that Mourinho lacks self confidence, or belief in his team (if not his strikers) as he goes in search of victory to seal a place in the Champions League last four.

According to Mourinho it's pure maths. He said: "I think, at the end of the two legs, we’ll have scored more goals than them. Pure mathematics. 3-1 now, but, in the end, I think it can be 4-3, or 5-4. If I don’t think we can win, I don’t go to the game and I’m happy to go."

Henry Winter does not expect Chelsea "to leave the stage meekly" and has drawn on Mourinho's side to draw on their spirit of 2012.

Chelsea need the bloody-mindedness shown in the astonishing 4-1 extra-time home triumph over Napoli under Di Matteo, determination witnessed further when Terry idiotically got himself sent off against Barcelona but they still found a way through to the final. Even in Munich, trailing to Bayern, they fought back. That is the Chelsea way, never yielding, always believing. But oh for a Drogba tonight.